Rogk-drill



(No Model.) 4 Sheets-Shaen 1.

W. E; PEYTON.

. ROCK DRILL. N0..296,05Z. Patented Apr. 1,- 1884-.

. N Model.) W}. E Y'PEYTON. 4 Shee'u s-Sheet 2.

I ROOKDRILL. V

N0. 052. Patented A 4 Sh eets-Sheet 3.

(No Model.)

W.;B. PEYTON v ROCK DRILL.

j Patented A pr. 1, 1 884.

ITE. STATEs PATENT Erich.

WILLIAM r Y'rOiv, OF SAN FRANCISCO, OALIEORNiA, ASSIGNOR OF PART ro JAMES M. THOMPSON, OF sAME PLACE, AND OONEAD SI-IENFIELD, OF ALBUQUERQUE, TERRITORY OF NEW M xioo;

ROCK-DRILL.

SFECIPICATION forming part ofLetters Patent No. 296,052,

Applicalionfiled November 5, 1883. (No model.)

To all whom it may concernk Be it known that I, WVILLIAM E. PEYTON, of the city and county of San Francisco, and State of California, haveinvented an Improvement in Rock-Drills; and I hereby declare the following tobe a full, clear, and exact description thereof.

My invention relates to a new and useful rock-drill; and it consists in a drill-holding spindle or piston fitted in the bore of a barrel, and adapted to be driven forward to deliver its blow by an explosion in the barrel behind it, and to be returned by a spring.

It further consists in a construction of barrel and spindle adapting them for the purpose, and in minor details of construction, all of which I shall hereinafter fully explain, reference being made to the accompanying drawings, in which- Figure l is a perspective view of my rockdrill. Fig. 2 is a longitudinal vertical section of same. Fig. 3 is an enlarged section of the breech. Fig. 4 is a perspective view of the rear end of barrel and parts connected there 2 5 with. Fig. 5 is a perspective viewof the outer face of oscillating head M, showing it. removed from, though in position to be fitted to, the I barrel, Fig. 4. Fig. 6 is a perspective View of the inner face of oscillating head M. Fig. 7 is a perspective of the forward end of .barrel. Fig. 8 is a similar view of the rear end of same. Fig. 9isasection of theheadthrough the cartridge-receiver and firing-pin. The object of my invention is to provide a drill of great power, capable of rapid and effective operation, and of such weight and cost as will adapt it for general use everywhere. A is the barrel or casing of the machine, mounted in guides b on afoundationplate, B, and adapted to be set up or back by a screw, O, as usual. The machine is to be mounted on a tripod or other, suitable support unnecessary to show here. The bore of the barrel is larger toward the front, and then is decreased 5 by a shoulder, c, to the cartridge-chamber a, which is formed by an annular band or tube let into the rear of the barrel, and just large enough to receive the cartridge, Fig. 2.

*D is the piston of the barrel, or, as I prefer by means of any suitable chuck.

dated April 1, 1884.

to call it, the drill-holding spindle, for to its outer end is fitted the drill (not here shown) This spindle is of such a length that its rear end, when fully in, extends back to the cartridgechamher, while its forward end projects beyond the end of the barrel a suitable distance, Fig. 2. Upon the end of the barrel is secured a perforated cap, A, against which a flange or collar, d, on the spindle impinges with intervening packing to limit the return of the spindle. 66) Upon the spindle, just in front of the shoulder, formed in the bore about its middle, is a shoulder, d, between which and the cap A is a spring, E, around the spindle, whereby said spindle, when forced forward, is returned.

The spindle fits the boreof the barrel with sufficient exactness to receive and yield to the full effect of the explosion behind it, caused by the means and in the manner I shall now explain. I 70 To the back of the barrel is screweda flange or plate, F, extending above it somewhat in the form of a crescent, and provided with a hole, f, on one side, Figs. 4, 8. This flange lies flush with the rear end of the barrel.

Screwed to the end or breech of the barrel is a guide, G, having a concaved face, Fig. 4.. This projects backwardly from the barrel, and has a raised portion and a recessed one, forming a guide-groove, 9, between the raised por- 8o tionand the end of the barrel.

Screwed into the lower center of the guidepiece G is a tube, H, having an elongated slot, h, in its top. WVithin this tube is a small. rod, I, extending forwardly through it, andhaving on its forward end the shell-extractor J ,which extends upwardly through a slot, 9, ingroove g, and adapted to fit into a vertical groove or seat made in the breech or end of the barrel below the cartridge-chamber, Fig. 4.. Thetop 0 this head is flat.

between it and the guide-tube H, is a' small sleeve, z, between which and a nut, j, on the rear end of the rod is a spring, It. The sleeve i has a threaded hole in its top.

K is a tube having a wing or flange, Z, with a concaved surface or face, Fig. 4. This tube fits over and slides upon the guide-tube H, and a set-screw, Z, passes down through it and slot 71 into the threaded hole of sleeve z',whereby said tube and sleeve are connected. The wing Z of tube K rests on a backwardly-extending guide piece or lug, 0. Now, from this construction it will be seen that by pushing back tube K, which is connected through slot 71. with the sleeve i, said sleeve moves back also, and pressing against spring 70, which bears against nut j on the rod I, said rod is moved back and carries back with it the extractor moving in slot but if some force be applied to hold the extractor forward to its place and not let it move back, as described, the outer tube, K, may still move back by reason of the yielding of the spring k, and as long as the extractor is held as described the power of the spring is directed to throw it out, so when the extractor is released it will be thrown out suddenly and with sufficient force to eject the shell.

M is a plate or head. It is circular in outline, and has its periphery turned down to form a shoulder, making such a form that when the head is fitted to its place the larger rim fits in the groove 9 of the guide G, and

its smaller rim fits on the raised surface of said guide, thus forming a neat bearing to hold it true in its oscillating movement, which I shall presently explain. The inner face of It has a central hole, on. Screwed'into its outer face is a slotted tube, N, containing the cartridge-receiver O, which is a short pin or bar having a concaved or recessed inner head, Figs. 6 to 9. This receiver extends through a suitable hole in the head, and is held flush with the inner face thereof by a spring, 0, within the tube N, operating against its rear end, Fig. 5. It is also provided with a lug or pin, 0, which projects through the slot in said tube N. By moving this pin back the receiver 0 is drawn back through the hole in the head into the tube N, and when released is moved forward again by its spring into said hole until it is limited by thelug 0 coming in contact with the head, when it lies flush with the inner surface of said head. A slotted tube, 1?, is let into the outer face of the head near another portion of its rim. In this tube is the firing-pin Q, extending through the head and projecting slightly beyond its inner surface, Figs. 6 to 9. Its rear end is provided with a cross-lug, q, projecting through the slot of the tube 1;, and it is influenced to its action by a spring, 19, in said tube. Through the head M, at a point between the cartridge-receiver and the firingpin, is made a hole, R, below which, 011 its inner surface, and connecting with it, is a deep groove, 1-, one wall of which is' abrupt or straight, while the other is a long incline, r, made in the inner face of the head, and forming a cam, Fig. 6. The cartridge-receiver, the firing-pin, and the hole It, which is the discharge for the shell, are at equal distances from the center, and their centers form three points in an arc of a circle. "When the head M is fitted to its place on the rear end of the barrel, its inner face impinges against said end, and the face of the crescentshaped flange F, being pivoted and held thereto by a pin, S, passed through its center and screwed into the barrel. In this position, and when oscillated on its center, the cartridge-receiver is adapted to be brought into connection with the feed-hole f in the crescent-shaped flange and with the cartridge-chamber a in the breech of the barrel. which travels in a groove, 7), made in the end Its firing-pin, the point of 8:

of the barrel and in the crescent-shaped flange on the are of a circle, is adapted to be brought into relation with'cartridgechamber, and the discharge-hole R is likewise adapted to be brought into relation with the cartridge-chan1- ber. The hole f in the crescent-shaped flange and the cartridge-chamber are therefore equidistant from the center, and their centers form points in an are having a radius equal to the radius of the are of which the centers of the cartridge-receiver, the firing-pin, and the discharge-hole form three points.

Upon the wing Z of the tube K is formed a backwardly-inclined curved cam, Z, made of a single bar, against which the lug q of the firing-pin is adapted to travel. Screwed to the guide G is a curved cam, Z, vertical in general direction, and having a backward inclination, against the back or outer face of which the lug 0 of the cartridgereceiver is adapted to travel For a better understanding of these parts I shall now proceed to describe their operation.

Screwed to the outer face of the head M is a lever, T, the lower end of which is mount ed loosely on the central pivot-pin, S. By pullingthis lever down the following operations take place: The head M is turned in its guide. The lug q travels down the cam Z and is forced back, drawing the firing-pin back until it reaches the bottom of the cam and is ready to be released. The firing-pin is then directly behind the cartridge, which is in the chamber a, and when its lug is released from the cam it is thrown forward to explode the cartridge. During this movement the lug 0 of the cartridge-receiver is traveling up the cam Z, which forces it back, withdrawing the receiver until, at the moment when the firingpin is released, it is in connection with the feed-hole f in the crescent-shaped flange,when a fresh cartridge is forced through said hole, in a manner I shall presently describe, into the head against the receiver. The lever T is now moved up, and the head M turned back again. The lug q of the firing-pin travels up on the inside of cam Z and forces the wing Z and its tube K back, which presses against 3Q rectly behind the end of the drill-holding spini the spring 70 and exerts its force to draw back the rod I and ejector J, which is resisted by the fiat face of the head, which prevents the ejector from movinglfrom itsseat; but by the cartridge-chamber The strain, whichwas gradually increasing, being now released, the ejector is sprung back with suddenness and e throws the empty shell back through the discharge-hole. The next moment the lug q releases the cam Z, and the inclined wall or cam.

r of the groove 1" travels against the extractor,

forcing it forward again and carrying forward firing-pin on. its downward movement.

the tube K, with its wing Z and cam Z, in position for engagement with the lug q of the By thistime the cartridge-receiver has traveled down into relation with the cartridge-chamher, and the cartridge being released from the back of the barrel, is projected into the chamber a, ready for a repetition of the operationdescribed. The head M is limited in its oscillation by a curved stop, .2, the ends of which come in contact with the ends of guide G, Fig. 5. The explosion of the cartridge didle drives it forward to deliver the blow of its drill against the face of the rock.

It is obvious that by reason of the spindle having to return to its place, being influenced thereto by its spring, some exhaust must be provided for the vapors and air. This may be accomplished by tapping the bore at some' point behind the limit of the forward movement of the rear end of the spindle, and the exhaust-passage may be run forward, up or down, or sideways, as may bedesirable.

I have here shown pipes U extending side- I wise, Fig. 1. Through these the vapors and air escape as the spindle returns, being forced back by its spring.

The cartridge used may be made of shells filled with a small quantity of gun-cotton,

nitro-glycerine, or. any other suitable explosive, and may be made of any required size and strength, the idea being that a very small one,

manufactured at small cost, will answer the purpose.

Upon the innersurface of a flange, a, on the cap A, screwed to the forward end of the barrel, is pivoted a guide-bar, V, having bent ends, whereby a space or groove is formed between it and a curved strip, 12, screwedonto the flange, Fig. 7. A small spring, 6, at one head of the guide V, serves to hold the other end down on the strip 12, thus inclosing the groove.

On the inner surface of the crescentj .shaped flange F on the other end of the barrel is screwed a guide-bar, W, having one end bent around and hole fin the flange, Fig. 8.

partially encircling the feed- Upon the barrel Ais secured a spring, X.

Y are the cartridge-tubes, having within them springs y, said tubes being adapted to receive and'the springs to feed the cartridges forward in themanner of ordinary magazineguns, Fig. 2. A tube when filled with car tridges, is fitted to place by inserting its forward end under the guide V and pressing its rear portion against the spring X until it can enter under the guide Wat one end. It is then moved over until it is limited by the curved end of said guide when its mouth is in relation with the. feed-hole, Figs. 2, 3. The other tubes are fitted in parallel with the first, the spring X holding all to the proper place.

NVhen one tube is exhausted, its forward end is slipped out by forcing it from under the free end of guide V, and then withdrawing its rear end from guide W. The spring X forces the remaining tubes over, so that the outer one is in position to feed. The one removed when refilled with cartridges may then be placed in behind.

Having thus described my invention, what I clainras new, and desire to secure by Let ters Patent, is-

1. In a rock-drill, a barrel having a bore with an exhaust, and a breech to receive an explosive cartridge oi shell, and a firing mechanism to explode said shell, in combination with a piston or drill holding spindle fitted within the bore, and adapted to be driven forward by the explosion of the shell,and a spring around said spindle within the barrel for returning the spindle, substantially as herein described.

2. In a rock-drill, the barrel A, having a bore, with an exhaust, U, and a cartridgechamber in its breech, a mechanism for feed ing the cartridge to said chamber, exploding it, and ejecting the shell, in combination with the spring piston or drill holding spindlefitted within the bore, and behind which the cartridge explodes, substantially as herein described.

3. In a rock-drill, the barrel A, having a bore, with a shoulder, c,a perforated cap, A, on its forward end, a cartridge-chamber, a, in its breech, and an exhaust for its bore, and a mechanism on its breech for feeding a cartridge t6 its chamber, firing it, and ejecting the shell, in combination with the piston or drill holding spindle D, fitted in the bore of the barrel, and having a shoulder, (1, within the bore, and flange (1 on its forward end, and the spring E around the spindle between the cap A of the barrel and the shoulder or collard of the spindle, substantially as herein described.

. In witness whereof I have hereunto set my hand.

S. H. Nonnsn, H. 0. LEE.

IIO 

